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Ken Chen

Patent Engineer

Phone: +86 88369999

Ken is mainly responsible for drafting patent applications, preparing responses to office actions, patent re-examinations, patent invalidation. Specifically, he is engaged in dealing with foreign applications in China as well as Chinese applications in foreign countries, patent translations, search reporting and analysis, patent invalidation analysis. Ken provides constructive advice for patent excavation and other counselling services related to intellectual property for domestic and foreign clients.

Prior to entry into patent practice, Ken spent 10 years as an engineer in various technical fields, including material processing, solar concentrating equipment, R&D in microelectronics interconnect materials, semiconductor packaging process and product design, with which he is qualified to make professional observations and provide suggestions and solutions to clients.

Technical Fields

  • Machinery and Electromechanics
  • Material Processing
  • Semiconductor Packaging
  • Telecommunication and Electronics

Practice Areas

  • Patent application
  • Reexamination and invalidity analysis
  • Intellectual property protection

Professional Experiences

  • Patent Engineer, Chang Tsi & Partners, Beijing, China (2017-present)
  • Engineer ∣Section Chief ∣Vice Director of Department, Department of Semiconductor Packaging Design, Renesas Semiconductor Corp., Beijing, China (2007-2017)
  • Researcher, Chinese Academy of Science, Beijing, China (2003-2004)


  • PostDoctorate Degree, Hanyang University, Information Display Institute, Korea (2006)
  • Ph.D. in Engineering, Beijing Polytechnic University (2003)
  • Bachelors Degree in Engineering, Jilin University of Technology (1998)

Key Accounts

  • IP Spring
  • UPS
  • TMI
  • Transform Japan
  • Media
  • Baidu
  • Innotron Memory Co., Ltd
  • Air China
  • China Academy of railway Sciences Co. Ltd
  • ChipMOS Technologies

Representative Cases

  • In dealing with a typical case, where the examiner rejected the application as being unpatentable and the reexamination board supported the rejection as well, Ken conducted a careful study and comparison between the technical solution of the subject application and the prior art in the reference documents with respect to the reexamination opinions. A detailed and persuasive argument was made by starting from basic theories such as fluid mechanics with step-by-step illustration and painstaking analysis, to highlight the prominent substantive features and significant technical effects of the patent. Finally, our observations were recognized by the reexamination board, which revoked the refusal decision and allowed the subject application.

Working Languages

  • Mandarin Chinese, English and Japanese

Team Overview

Chang Tsi & Partners is proud of our excellent team of attorneys. Our attorneys are international, professional, well-educated and experienced in handling all types of commercial matters. Our partners include a few of the earliest legal practitioners in in China. Before they went into private practice, most of our partners served at government organs, judicial institutions, and/or big corporations and are thus very familiar with the internal mechanisms of these organizations. They also have established extensive, close contacts within these organizations. So our partners have the ability to integrate their social resources and create synergy to maximize the benefits for our clients.

Chang Tsi & Partners currently employs a total of 320 staffs, including 200 attorneys, agents and foreign consultants and others. The majority of our lawyers hold master's degrees and above, from prestigious law schools both domestic and international. Some of our lawyers have studied and/or worked abroad and have qualified as lawyers and patent agents in America and Canada.

At Chang Tsi, we highly value teamwork and cooperation. We also stress sharing of resources and experience in order to provide our clients with the best services. Their years of practice and extensive experience working with foreign firms, make our attorneys well-qualified to handle the most complicated and challenging legal matters for clients all over the world.